Yes, Mini Games are incredibly fun and allow you to Break Away From The Main Story whenever you would so please. From Baseball and karaoke to going on dates and visiting the gym, there is so many extra things while completing every mission and Substory apart of the Main Story. However, Mini Games are also crucial to complete if you hope to make Kiryu the best Fighter around, since each and every time you play one you will receive loads of EXP. And since there are so many Skills and traits to unlock for Kiryu, you need as much EXP as you can get your hands on!
Mini Games Found In Yakuza 6
Karaoke Hall (Kamurocho)
Live Chat (Kamurocho)
Sega Clubs (Kamurocho)
Batting Center (Kamurocho)
Gym RIzap's Club (Kamurocho)
Darts Game (Kamurocho)
Mahjong Club (Kamurocho)
Nyan Nyan Cafe (Kamurocho)
Cabaret Club (Kamurocho)
Shrines (Onomichi)
Calming Haruto (Onomichi)
Senjoki Lottery (Onomichi)
New Gaudi (Onomichi)